BasicStudents matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.

At Grade (Proficient)Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.

AdvancedStudents matched to this level are ready for material that requires superior performance and mastery.

Starts by introducing the four requirements of life and then goes on to explain the factors that affect climate. Climates relationship to the type of vegetation found in a biome is then explained before introducing the major terrestrial biomes.